Research Article
Efficiency and Droop Improvement in GaN-Based High-Voltage Flip Chip LEDs
Table 2
The wall plug efficiency comparison of three kinds of LED.
| | | Conventional HV-LED (ref-1) | HV-LED with ODR (ref-2) | HVFC-LED (versus ref-1) | HVFC-LED (versus ref-2) |
| | Peak efficiency | 46.9% | 59.9% | 62.0% | | Efficiency @ 1 watt | 31.8% | 40.8% | 44.0% | | Efficiency @ 3 watt | 21.1% | 26.5% | 29.3% | | @ 1 watt | 32.2% | 31.6% | 29.0% | | @ 3 watt | 55.0% | 55.8% | 52.7% | | Droop improve @ 1 watt | | | 9.9% | 9.2% | | Droop improve @ 3 watt | | | 4.2% | 5.6% |
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